材料科学
超级电容器
聚二甲基硅氧烷
制作
聚吡咯
压力传感器
光电子学
微型多孔材料
石墨烯
电极
纳米技术
复合材料
电容
聚合物
物理化学
替代医学
化学
病理
物理
热力学
医学
聚合
作者
Heun Park,Jung Wook Kim,Soo Yeong Hong,Geumbee Lee,Joo Young Kim,Ju Hyun Oh,Sang Woo Jin,Yu Ra Jeong,Seung Yun Oh,Jun Ho Yun,Jeong Sook Ha
标识
DOI:10.1002/adfm.201707013
摘要
Abstract This study reports on the fabrication of pressure/temperature/strain sensors and all‐solid‐state flexible supercapacitors using only polydimethylsiloxane coated microporous polypyrrole/graphene foam composite (PDMS/PPy/GF) as a common material. A dual‐mode sensor is designed with PDMS/PPy/GF, which measures pressure and temperature with the changes of current and voltage, respectively, without interference to each other. The fabricated dual‐mode sensor shows high sensitivity, fast response/recovery, and high durability during 10 000 cycles of pressure loading. The pressure is estimated using the thermoelectric voltage induced by simultaneous increase in temperature caused by a finger touch on the sensor. Additionally, a resistor‐type strain sensor fabricated using the same PDMS/PPy/GF could detect the strain up to 50%. Flexible, high performance supercapacitor used as a power supply is fabricated with electrodes of PPy/GF for its high surface area and pseudocapacitance. Furthermore, an integrated system of such fabricated multifunctional sensors and a supercapacitor on a skin‐attachable flexible substrate using liquid–metal interconnections operates well, whereas sensors are driven by the power of the supercapacitor. This study clearly demonstrates that the appropriate choice of a single functional material enables fabrication of active multifunctional sensors for pressure, temperature, and strain, as well as the supercapacitor, that could be used in wirelessly powered wearable devices.
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